Which company has the second best AI model end of May?

Which company has the second best AI model end of May? is a technology prediction market based on the Chatbot Arena LLM Leaderboard, which ranks AI models on lmarena.ai. The market will resolve on May 31, 2026 at 12:00 PM ET using the company behind the model in second place on the "Text Arena | Overall" leaderboard, with style control off. If two models are tied, the market uses Arena score as the next tiebreaker, followed by alphabetical company order if needed.

This event matters because the Chatbot Arena ranking is one of the clearest public benchmarks for comparing major AI models from Big Tech and other AI companies. Traders are forecasting which company will hold the number-two position at the check time, making this an event prediction tied directly to leaderboard performance rather than broad industry sentiment.

Current market probability is 99.4%, indicating very strong market sentiment around the expected outcome, although the result still depends on the official leaderboard reading at resolution time. The market opened on April 14, 2026 and remains active through the end-of-May deadline.